Ag-Ni偏晶合金凝固过程研究

Ag-Ni偏晶合金凝固过程研究

邓聪坤,江鸿翔,赵九洲,何杰,赵雷

Study on the Solidification of Ag-Ni Monotectic Alloy

Congkun DENG,Hongxiang JIANG,Jiuzhou ZHAO,Jie HE,Lei ZHAO

表1 Ag-Ni体系的热物性参数^[31,32]

Table 1 The thermophysical property parameters of Ag-Ni system^[31,32]

Parameter	Value	Unit
Thermal conductivity of liquid Ag $k_{l}^{A g}$	122.29093+0.04259T	W·K^-1·m^-1
Thermal conductivity of liquid Ni $k_{l}^{N i}$	57	W·K^-1·m^-1
Thermal conductivity of solid Ag $k_{s}^{A g}$	429	W·K^-1·m^-1
Thermal conductivity of solid Ni $k_{s}^{N i}$	90.7	W·K^-1·m^-1
Density of liquid Ag $ρ_{l}^{A g}$	9330-0.91(T-1233.7)	kg·m^-3
Density of liquid Ni $ρ_{l}^{N i}$	7905-1.19(T-1727)	kg·m^-3
Density of solid Ag $ρ_{s}^{A g}$	10500	kg·m^-3
Density of solid Ni $ρ_{s}^{N i}$	8900	kg·m^-3
Specific heat of liquid Ag $c_{p}^{l, A g}$	283	J·kg^-1·K^-1
Specific heat of liquid Ni $c_{p}^{l, N i}$	620	J·kg^-1·K^-1
Specific heat of solid Ag $c_{p}^{s, A g}$	235	J·kg^-1·K^-1
Specific heat of solid Ni $c_{p}^{s, N i}$	444	J·kg^-1·K^-1
Latent heat of solidification of pure Ag $L^{A g}$	102809	J·kg^-1
Latent heat of solidification of pure Ni $L^{N i}$	292334	J·kg^-1